|Rank|Nation|Gold|Silver|Bronze|Total|
|---|---|---|---|---|---|
|1|United States|12|13|6|31|
|2|Russia|10|5|6|21|
|3|Australia|8|12|6|26|
|4|China|7|4|8|19|
|5|Germany|5|6|5|16|
|6|Japan|3|3|3|9|
|7|Netherlands|3|2|2|7|
|8|Great Britain|2|3|3|8|
|9|Ukraine|2|3|2|7|
|10|Italy|2|2|1|5|
|11|Canada|2|0|1|3|
|12|Hungary|1|4|1|6|
|13|Spain|1|2|3|6|
|14|Poland|1|1|0|2|
|15|France|1|0|2|3|
|16|Finland|1|0|1|2|
|17|Belarus|1|0|0|1|
|18|Czech Republic|0|2|0|2|
|19|Slovakia|0|1|1|2|
|20|Denmark|0|1|0|1|
|20|Croatia|0|1|0|1|
|22|Romania|0|0|2|2|
|23|Bulgaria|0|0|1|1|
|23|Mexico|0|0|1|1|
|23|Serbia and Montenegro|0|0|1|1|
|23|South Africa|0|0|1|1|
|23|Sweden|0|0|1|1|
|23|Tunisia|0|0|1|1|
|Total|Total|62|65|59|186|

Question: the average silver medal count of the first five ranked nations?
Answer: 8